

package com.hazelcast.config;

import com.hazelcast.spi.annotation.PrivateApi;

/**
 * Accessor for the {@link EvictionConfig} of a {@link NearCacheConfig} to initialize the old default max size,
 * if no size was configured by the user.
 */
@PrivateApi
public final class NearCacheConfigAccessor {

    private NearCacheConfigAccessor() {
    }

    public static NearCacheConfig copyWithInitializedDefaultMaxSizeForOnHeapMaps(NearCacheConfig nearCacheConfig) {
        if (nearCacheConfig == null) {
            return null;
        }

        EvictionConfig evictionConfig = nearCacheConfig.getEvictionConfig();
        if (nearCacheConfig.getInMemoryFormat() == InMemoryFormat.NATIVE || evictionConfig.sizeConfigured) {
            return nearCacheConfig;
        }

        // create copy of eviction config
        EvictionConfig copyEvictionConfig = new EvictionConfig(evictionConfig).setSize(MapConfig.DEFAULT_MAX_SIZE);

        // create copy of nearCache config and set eviction config
        return new NearCacheConfig(nearCacheConfig).setEvictionConfig(copyEvictionConfig);
    }
}
